The MS1847 Series MS® Deadlock/Latch for ultra-narrow stile sliding doors features a self-protecting bolt with adjustable bolt projection. A compact lock designed to fit within very narrow sliding door stiles without compromising the high degree of security these doors need. The sturdy stainless steel bolt has two important features not usually found in sliding door hardware. First it is adjustable to a full 3/16" lengthening or shortening of bolt projection is possible by turning an exposed screw in the face of the lock. This can compensate for considerable misalignment between door and jamb. Secondly the MS1847 bolt is self-protecting if the door is closed with the bolt in the locked position. The bolt will retract immediately on contact with the jamb thus preventing damage or accidental lock-out.